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Trianthema portulacastrum L.

Synonyms

Portulacastrum monogynum, Portulaca toston, Tetragonia chisimajensis, Trianthema flexuosum, Trianthema hydaspicum, Trianthema littoralis, Trianthema monogyna, Trianthema obcordata, Trianthema procumbens

Common names

Black pigweed, horse purslane

My notes

It was seen only in Irkhaya (Irkaya) Farms.

Extract from Wikipedia article

Trianthema portulacastrum is a species of flowering plant in the ice plant family known by the common names desert horse purslane, black pigweed, and giant pigweed. It is native to areas of several continents, including Africa and North and South America, and present as an introduced species in many other areas. It grows in a wide variety of habitat types and it can easily take hold in disturbed areas and cultivated land as a weed. It is an annual herb forming a prostrate mat or clump with stems up to a meter long. It is green to red in color, hairless except for small lines of hairs near the leaves, and fleshy. The leaves have small round or oval blades up to 4 centimeters long borne on short petioles. Solitary flowers occur in leaf axils. The flower lacks petals but has purple, petallike sepals. The fruit is a curved, cylindrical capsule emerging from the stem. It is up to half a centimeter long and has two erect, pointed wings on top, where the capsule opens.[+]

Black pigweed (Trianthema portulacastrum) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, October 25, 2014
Unnamed Road, Qatar

Prostrate plant of black pigweed (Trianthema portulacastrum) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, October 25, 2014
Salwa Road, Qatar

Black pigweed (Trianthema portulacastrum) with a flower on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, October 25, 2014
Unnamed Road, Qatar

Flower of black pigweed (Trianthema portulacastrum) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, October 25, 2014
Unnamed Road, Qatar

Blooming black pigweed (Trianthema portulacastrum) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, October 25, 2014
Unnamed Road, Qatar

Black pigweed (Trianthema portulacastrum) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, August 21, 2015
خط الوكير، Qatar

Black pigweed (Trianthema portulacastrum) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, October 9, 2015
Unnamed Road, Qatar

Black pigweed (Trianthema portulacastrum) with unopened flower on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, October 9, 2015
خط الوكير، Qatar

Close up of leaves of black pigweed (Trianthema portulacastrum) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, October 9, 2015
Unnamed Road, Qatar

Close up of black pigweed (Trianthema portulacastrum) with a flower on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, October 9, 2015
Unnamed Road, Qatar

Black pigweed (Trianthema portulacastrum) with a flower on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, October 9, 2015
خط الوكير، Qatar

Links

• Flora of Qatar.
• Unknown plants or plants without names.
• Duplicate and extra pictures of plants.
• Earlier version of collection of plants.
• Other collections of pictures from Qatar: Lizards of Qatar, Cats of Qatar, Camels of Qatar, and Fish of Qatar.
• Picture archives.
• Home page of A. Sergeev.

Outside links

• Trianthema portulacastrum, Wikipedia article
• Trianthema portulacastrum from www.catalogueoflife.org
• Ekhlas M. M. Abdel Bary, The Flora of Qatar, Volume I: The Dicotyledons. Doha 2012
• Flora of Qatar, Volume II: The Monocotyledons
• Illustrated Checklist of the Flora of Qatar. John Norton et al. 2009
• Qatar eNature. Flora
• Ali Al-Rawi, Flowering plants of Kuwait, 1985
• Plants of Kuwait
• Flora of Saudi Arabia, Al-Qassim Region
• Flora of Eastern Saudi Arabia by Rain and Dust at Flickr
• Plants of South-Western Morocco
• Pictures from Qatar (Flickr/cpmkutty)
• Arabian plants by Gary Brown
• Flora of Israel

How the web page was created

• A list of plants with their common names was written using online sources and books.
• Web pages were written by a program consisting of several scripts.
• Full names, synonyms, and classification of plants were found online from catalogueoflife.org and theplantlist.org using a script.
• Pictures of plants were selected from a database using a script.
• This web page was written using a script.

Acknowledgements

QNHG (Qatar Natural History Group) and associated people, for a possibility to participate in their field excursions and to learn about local nature.